Note by @meowtechfoundation

i kinda forgot about relay.catboys.science, but i'm adding it to the list of the services hosted under the Meow Tech Foundation umbrella now
if one is an instance owner and wants their instance to get added to the relay, then one can message me about it and if i'll say that the instance is approved, then you can set up the relay in the instance settings
URL for Mastodon also works for *key and Iceshrimp.NET, btw i'm just too lazy to maintain a fork of the relay software which would tell that on the page

- @link